Re: [PATCH v5 1/1] ALSA: hda/tas2781: Add tas2781 hda driver based on SPI

kernel test robot
2024-05-19T18:41:05Z

Hi Baojun,

kernel test robot noticed the following build warnings:

[auto build test WARNING on tiwai-sound/for-next]
[also build test WARNING on tiwai-sound/for-linus rafael-pm/linux-next rafael-pm/bleeding-edge linus/master v6.9 next-20240517]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Baojun-Xu/ALSA-hda-tas2781-Add-tas2781-hda-driver-based-on-SPI/20240519-230843
base: https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git for-next
patch link: https://lore.kernel.org/r/20240519150433.760-2-baojun.xu%40ti.com
patch subject: [PATCH v5 1/1] ALSA: hda/tas2781: Add tas2781 hda driver based on SPI
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20240520/202405200222.TIIew7S6-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240520/202405200222.TIIew7S6-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202405200222.TIIew7S6-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> sound/pci/hda/tas2781_spi_fwlib.c:1225:11: warning: result of comparison of constant 13656 with expression of type 'unsigned char' is always false [-Wtautological-constant-out-of-range-compare]
1225 | (reg == TASDEVICE_PAGE_REG(TAS2781_SA_COEFF_SWAP_REG)) &&
| ~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> sound/pci/hda/tas2781_spi_fwlib.c:1281:11: warning: result of comparison of constant 13660 with expression of type 'unsigned char' is always true [-Wtautological-constant-out-of-range-compare]
1281 | (reg <= (TASDEVICE_PAGE_REG(TAS2781_SA_COEFF_SWAP_REG) + 4)))
| ~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sound/pci/hda/tas2781_spi_fwlib.c:1280:11: warning: result of comparison of constant 13656 with expression of type 'unsigned char' is always false [-Wtautological-constant-out-of-range-compare]
1280 | (reg >= TASDEVICE_PAGE_REG(TAS2781_SA_COEFF_SWAP_REG)) &&
| ~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sound/pci/hda/tas2781_spi_fwlib.c:2112:3: warning: variable 'status' is uninitialized when used here [-Wuninitialized]
2112 | status++;
| ^~~~~~
sound/pci/hda/tas2781_spi_fwlib.c:2050:12: note: initialize the variable 'status' to silence this warning
2050 | int status;
| ^
| = 0
4 warnings generated.

vim +1225 sound/pci/hda/tas2781_spi_fwlib.c

1206
1207 static int tasdev_multibytes_chksum(struct tasdevice_priv *tasdevice,
1208 unsigned char book, unsigned char page,
1209 unsigned char reg, unsigned int len)
1210 {
1211 struct tas_crc crc_data;
1212 unsigned char crc_chksum = 0;
1213 unsigned char nBuf1[128];
1214 int ret = 0, i;
1215 bool in;
1216
1217 if ((reg + len - 1) > 127) {
1218 ret = -EINVAL;
1219 dev_err(tasdevice->dev, "firmware error\n");
1220 goto end;
1221 }
1222
1223 if ((book == TASDEVICE_BOOK_ID(TAS2781_SA_COEFF_SWAP_REG)) &&
1224 (page == TASDEVICE_PAGE_ID(TAS2781_SA_COEFF_SWAP_REG)) &&
> 1225 (reg == TASDEVICE_PAGE_REG(TAS2781_SA_COEFF_SWAP_REG)) &&
1226 (len == 4)) {
1227 /* DSP swap command, pass */
1228 ret = 0;
1229 goto end;
1230 }
1231
1232 in = check_yram(&crc_data, book, page, reg, len);
1233 if (!in)
1234 goto end;
1235
1236 if (len == 1) {
1237 dev_err(tasdevice->dev, "firmware error\n");
1238 ret = -EINVAL;
1239 goto end;
1240 }
1241
1242 ret = tasdevice_spi_dev_bulk_read(tasdevice,
1243 TASDEVICE_REG(book, page, crc_data.offset),
1244 nBuf1, crc_data.len);
1245 if (ret < 0)
1246 goto end;
1247
1248 for (i = 0; i < crc_data.len; i++) {
1249 if ((book == TASDEVICE_BOOK_ID(TAS2781_SA_COEFF_SWAP_REG)) &&
1250 (page == TASDEVICE_PAGE_ID(TAS2781_SA_COEFF_SWAP_REG)) &&
1251 ((i + crc_data.offset) >=
1252 TASDEVICE_PAGE_REG(TAS2781_SA_COEFF_SWAP_REG)) &&
1253 ((i + crc_data.offset) <=
1254 (TASDEVICE_PAGE_REG(TAS2781_SA_COEFF_SWAP_REG) + 4)))
1255 /* DSP swap command, bypass */
1256 continue;
1257 else
1258 crc_chksum += crc8(tasdevice->crc8_lkp_tbl, &nBuf1[i],
1259 1, 0);
1260 }
1261
1262 ret = crc_chksum;
1263
1264 end:
1265 return ret;
1266 }
1267
1268 static int do_singlereg_checksum(struct tasdevice_priv *tasdevice,
1269 unsigned char book, unsigned char page,
1270 unsigned char reg, unsigned char val)
1271 {
1272 struct tas_crc crc_data;
1273 unsigned int nData1;
1274 int ret = 0;
1275 bool in;
1276
1277 /* DSP swap command, pass */
1278 if ((book == TASDEVICE_BOOK_ID(TAS2781_SA_COEFF_SWAP_REG)) &&
1279 (page == TASDEVICE_PAGE_ID(TAS2781_SA_COEFF_SWAP_REG)) &&
1280 (reg >= TASDEVICE_PAGE_REG(TAS2781_SA_COEFF_SWAP_REG)) &&
> 1281 (reg <= (TASDEVICE_PAGE_REG(TAS2781_SA_COEFF_SWAP_REG) + 4)))
1282 return 0;
1283
1284 in = check_yram(&crc_data, book, page, reg, 1);
1285 if (!in)
1286 return 0;
1287 ret = tasdevice_spi_dev_read(tasdevice,
1288 TASDEVICE_REG(book, page, reg), &nData1);
1289 if (ret < 0)
1290 return ret;
1291
1292 if (nData1 != val) {
1293 dev_err(tasdevice->dev,
1294 "B[0x%x]P[0x%x]R[0x%x] W[0x%x], R[0x%x]\n",
1295 book, page, reg, val, nData1);
1296 tasdevice->err_code |= ERROR_YRAM_CRCCHK;
1297 return -EAGAIN;
1298 }
1299
1300 ret = crc8(tasdevice->crc8_lkp_tbl, &val, 1, 0);
1301
1302 return ret;
1303 }
1304

--
0-DAY CI Kernel Test Service